Siemens SENTRON 5SL4250-7CC — 50 A, 2-pole C-curve MCB
The Siemens SENTRON 5SL4250-7CC is a 2-pole miniature circuit breaker rated 50 A with a C tripping characteristic and a 10 kA breaking capacity at 400 V AC per EN 60898.
Rated operating voltage is 400 V AC for multi-phase operation, with a maximum of 440 V AC. Supply frequency is 50/60 Hz. The DC rating tops out at 72 V — usable for DC branch protection only at low voltage. The MCB is sealable, halogen-free, and silicon-free, which simplifies compliance for installations requiring low-corrosion or clean-room materials.
Panel integration and mechanical fit
Depth is 76 mm, height 90 mm, width 36 mm (2 MW). Mounting position is unrestricted — installs vertically, horizontally, or flat. IP20 with connected conductors, so the busbar area must be within a closed enclosure.